River levels Ollie Harding Life long paddler, coach and freelance photographer More posts by Ollie Harding. Ollie Harding 11 Nov 2019 • 1 min read The amazing resource that is Gaugemap. Shown here the level below Marlow Lock and here the flow at Maidenhead Bridge. Subscribe to paddling Get the latest posts delivered right to your inbox Subscribe Great! Check your inbox and click the link to confirm your subscription. Please enter a valid email address!